Large scaled pit viper

Description

Adults may attain a total length of 68 cm (27 in),which includes a tail 12 cm (4.7 in) long. Dorsally,T.macrolepis is bright green,with blackish skin between the scales in some places.There is a yellow or white stripe on each side of the body,which runs along the first dorsal scale row.The upper lips are pale green,and there may be a black streak behind the eye.Ventrally,it is pale greenish. The dorsal scales,which are large,keeled,and overlapping,are arranged in only 12-15 rows at midbody.The dorsal scales in the 10 middle rows are always the largest,and additional rows are made up of smaller scales.An even number of dorsal scale rows is frequently found in this species,even though it is uncommon in snakes in general.Ventrals 133-143;subcaudals divided 44-58